ARM: dts: berlin: add the pinctrl node and muxing setup for uarts

Add pinctrl bindings and system control nodes to what we currently know
about Berlin SoCs. Where available, also set default pinctrl property
for uarts, when there is only one pinmux option for it.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/berlin2.dtsi b/arch/arm/boot/dts/berlin2.dtsi
index 591d4b8c1c2b..2477dac4d643 100644
--- a/arch/arm/boot/dts/berlin2.dtsi
+++ b/arch/arm/boot/dts/berlin2.dtsi
@@ -296,6 +296,8 @@
                                 reg-io-width = <1>;
                                 interrupts = <8>;
                                 clocks = <&refclk>;
+                                pinctrl-0 = <&uart0_pmux>;
+                                pinctrl-names = "default";
                                 status = "disabled";
                         };
 
@@ -306,6 +308,8 @@
                                 reg-io-width = <1>;
                                 interrupts = <9>;
                                 clocks = <&refclk>;
+                                pinctrl-0 = <&uart1_pmux>;
+                                pinctrl-names = "default";
                                 status = "disabled";
                         };
 
@@ -316,9 +320,31 @@
                                 reg-io-width = <1>;
                                 interrupts = <10>;
                                 clocks = <&refclk>;
+                                pinctrl-0 = <&uart2_pmux>;
+                                pinctrl-names = "default";
                                 status = "disabled";
                         };
 
+                        sysctrl: system-controller@d000 {
+                                compatible = "marvell,berlin2-system-ctrl";
+                                reg = <0xd000 0x100>;
+
+                                uart0_pmux: uart0-pmux {
+                                        groups = "GSM4";
+                                        function = "uart0";
+                                };
+
+                                uart1_pmux: uart1-pmux {
+                                        groups = "GSM5";
+                                        function = "uart1";
+                                };
+
+                                uart2_pmux: uart2-pmux {
+                                        groups = "GSM3";
+                                        function = "uart2";
+                                };
+                        };
+
                         sic: interrupt-controller@e000 {
                                 compatible = "snps,dw-apb-ictl";
                                 reg = <0xe000 0x400>;